Pump or motor



F. REAUGH.

PUMP OR MOTOR. APPLICATION FlLED AUG.26, 1919.

Patented Oct. 25, 1921.

INVENTOR ATTORNEY PATENT ()FFIQE.

FRANK BEAUGH, OF OAKCLIEF, TEXAS.

PUMP 0R MOTOR.

Application filed August 26, 1919.

To all whom it may concern Be it known that I, hnANK REAUGH, a citizen ofthe United States, and a resident of Oakcliff, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in a Pump or Motor, of which the following is a specification.

This invention relates to mechanism of the rotary type in which piston members move with and act on or are actuated by a fluid in its movement through the mechanism. More particularly, the invention relates to that type of pump or motor disclosed and broadly claimed in my prior Patent 1,101,- 329, issued June 28, 1913.. In the specific forms there illustrated, the pistons are mounted for revolution around a stationary core, and simultaneously to continuously rotate on their axes at half the speed of said revolution and in an opposite direction thereto. The curves of the inner surface of the casing and the outer surface of the core are approximately those of a limacon and its loop.

The main objects of my invention are to more effectively transmit power to the pistons, to reeuce to a minimum the lost motion or back lash resulting. from wear in the gears, and to better insure the accurate predetermined movement and simultaneous rotation of the pistons. 7

To secure these objects, I so proportion and so position the power transmitting gears, that each in traveling around the central stationary gear, serves to transmit power to two separate adjacent piston gears to r0- tate both in the same direction about their individual axes while they rotate bodily in the opposite direction around the core. Furthermore, each piston gear receives power from the central stationary gear through two separate and independent intermediate gears. By meansof my invention, this double transmission by each intermediate gear and this doubletransmission to each piston gear is accomplished without the addition of any more gears than those shown in my patent abovereferred to and without any additional expense or complication.

In the accompanying drawings, to which reference is to be had:

Figure 1 is a central transverse section in V a plan at right: angles'to the axis of revolution.

Specification of Letters Patent.

Patented Oct. 25, 1921.

Serial No. 320,005.

Fig. 2 is a section taken approximately on the line 22 of Fig. 1 or the corresponding line of Fig. 3, and i Fig. 3 is a section on the line 3-3 of Fig. 2.

I have illustrated my invention as applied to a pump or motor having a casing including an outer curved wall 10, an end wall 11, and a core 12. These are shown as being formed integral although it will of course be evident that in practice they ay be made up of any desired number of sections or parts rigid in respect to each other. The core has terminal portions 13-1 3- concentric with the axis of the machine, while the body of the core is eccentric in respect thereto so as to leave an annular passage including a wide portion 14, and a narrow portion 15. The casing intermediate of these portions has an inlet 16 and an outlet 1'? (assuming that the parts rotate clockwise "from the position shown in Fig. 1), these being preferably comparativcly large to permit of the free flow of the fluid medium.

Mounted for rotation on the cylindrical or bearing portions 13 of the core is a rotor including circular end walls, frames. or disks 18 and 19, rigidly connected by a plurality of spaced cylindrical wall sections or filler blocks 20. These are at such positions in respect to the axis of the machine and of such thickness that they may pass in succes sion through the narrow portion 15 of the annular passage as the rotor turns. The ends walls or disks 18 and 19 .01 the rotor also carry a plurality of piston members 21, each being spaced between two adjacent filler blocks and each mounted for rotation about its own axis, and each of a length approximately equal to the distance between two adjacent filler blocks. The axes of thesev piston members are at the same distance from the axis of the machine as is the center of each filler block so that the axes pass the narrow portion 15 of the annular passage. Each piston is of amaximum thickness, substantially, equal to the width of the narrow portion 15 of the annular passage and of a width substantially equal to the width of the widest portion 14: of the annular passage. Each piston has a shaft or spindle portion 22 extending through the end wall 19 of the rotor and on the extending portion there is mounted a pinion 23.

The corresponding bearing portion 13 of the core also extends through the end wall 19 of the rotor and has a stationary gear. 24

shafts 25 on which are rotatably mounted intermediate power transmitting gears '26. It is desired to rotate the pistons at the same speed, and at one half the speed of rotation of the rotor, the piston gears 23 are of the same pitch diameter. If they lie in the same transverse plane as the stationary gear 2%, and if the gears 26 are simple ones then the pitch diameter of the gears 23 must be twice that of the gear 24: and the pit-ch diameter of the gears 26 is immaterial. The same result is accomplished by making Y the gears 26 with two portions of different pitch diameters, one meshing with gears 23 and the other with gear 24and in that event, the'gears 23 will be less than or greater than twice the gear 24 by an amount varying with the difference in the pitch diameter of the 8 two portions of each gear 26. For instance,

gears 23 and 24 may all be the same size if the portion of each gear 26 meshing with gear gear 23 is one half the pitch diameter of the portion of each gear 26 meshing with gear 24.

Each gear 26 meshes not only with the stationary gear 24: but with two adjacent piston gears 23. There are the same number of intermediate or power transmitting gears 26 as there are piston gears 23 and by means of my novel construction, each intermediate gear transmits power to or through two adjacent piston gears and the rotation of each piston gear about its axis i controlled by two separate and independent intermediate gears 26, both of which mesh therewith and both of which mesh with the stationary gear 24:.

I have shown the design of pump or motor in which there are three piston members 21 and a corresponding number of piston gears, intermediate gears, and'iiller blocks 20, but it will of course be evident that I do not wish to be limited in any way to this number as a smaller or larger number may be employed with appropriate change in the relative proportions of the parts With any such change, it will of coursebe evident that the piston gears must always be of twice the diameter of the stationary gear.

The gears26 may be mounted on any suitable member or carrier rotatable about the axis of the machine. For instance, the stub shafts 25 may be mounted on the end wall '19 of the rotor or on a gear casing 27 which is' rotatable with the rotoror they may be mounted in both. -Various means may be provided for the transmission of powerto or from the rotor and its pinions. Merely as one example of means for transmitting power to or from the member 27 I have shown the gear casing 27 secured to the wall 19 by flanges 30 and keyed to a shaft 28 journaled in the core 12 of the casing, said shaft being provided with a belt pulley 29. 'If the machine be used as a pump or compressor, power is transmitted 'to the machine through the pulley 29 and shaft 28 to cause the gear carrier to positively rotate. This carries with it the intermediate or power transmitting gears 26 which are likewise caused to rotate in the same direction as the shaft 28 ,by reason of their meshing engagement withithe station- 7 my gear 24. As they bodily move around the axis of the machine they carry with them the piston gears 231and the rotor, and cause said piston gears and the pistons to rotate about their own axes in the rotor at one half the speed of the rotor, and in the reverse direction to the direction of rotation of the rotor. Each piston in IIlOVlIlg through the wide portion of the .annular passage carries along a fluid, the return of fluid through the narrow portion of the annular passage being prevented by the filler blocks and pistons, which continuously close it. If the device be used as a motor, the pressure of the fluid acting on the pistons will causethem to move through the wide portion of the annular passage and this bodily movement of the pistons will cause a rotation of the rotor, and a corresponding rotation of the gear carrier 27. The Stub shafts 25 preferably connect the rotor and the gearcasing 27, and independent connecting means, such .as the flanges 30 are also employed. The shaft 28 is shown merely as one means forreceivin power from or delivering it to outside mechanism. It will be noted that the gears 23 and the gears 26 make up a continuous annular se-- ries, each gear meshing with the one ahead as well as the one behind it. Incase any one ofthe gears 26. should become broken or excessively worn, or should be temporarily removed, the machine may still be operated. If thereare more than three pistons, it will be evident that even more than one of the gears 26 may fail to function properly without interfering with the operation of the machineas a whole. irregularitygof any one of the gears will be counteracted by another gear dueto the. double transmission through each gear 26 and the double transmissionto each gear 23. I have shown the stationarypgear 24'asbe- 7 ing at the center of the annular series or train of gears. This is essential where such stationary: gear must be of one half the. pitch diameter of the piston gears 23 as in thespecific construction illustrated, but itv will of course be evident that in'some constructions where a very muchfaster rotationof the gears-23 is desired, the stationary gear While still remaining co-axial with Any the series may be very much larger and face inwardly to mesh with pinions 26, which must of course also be made larger or project out radially farther than the gears 23.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is:

l. The combination with a casing having a stationary core together forming an angular passage with inlet and outlet ports, a rotor, pistons mounted thereon to revolve through said annular passage, separate gears for said pistons, a stationary gear of one half the pitch diameter of said piston gears, and plurality of intermediate gears, each intermediate gear meshing with said stationary gear and with two separate piston gears to effect the rotation of said pistons on their own axes at half the speed of revolution of the rotor and in the opposite direction thereto.

2. The combination of a casing and a stationary core, forming an annular passage with inlet and outlet ports, a rotor, pistons mount-ed to revolve through said passage, a stationary gear, a separate gear for each piston, and a plurality of intermediate gears meshing with said stationary gear, each of said piston gears having two of said intermediate gears meshing therewith.

3. A pump or motor, having a plurality of pistons rotatable about their own axes and bodily movable about the axis of the machine, and means for controlling said rotation and bodily movement including a stationary gear, a separate gear for each piston, and a plurality of intermediate gears, each meshing with said stationary gear and with two of said piston gears.

4. A pump or motor, having a plurality of pistons rotatable about their own axes and bodily movable about the axis of the machine, means for controlling said rotation and bodily movement including a stationary gear, a separate gear for each piston, a plurality of intermediate gears, each meshing with said stationary gear and with two of said piston gears, and each of said piston gears having two intermediate gears meshing therewith.

5. A pump or motor, having an annular passage of continuously varying width, a plurality of pistons movable along said passage, and means for rotating each piston about its own axis and in the opposite direction to that of its bodily movement along said annular passage, said means including a stationary gear, a plurality of gears, one secured to each piston, and an equal number of intermediate gears, each meshing with said stationary gear and with two piston gears and each piston gear having two of said intermediate gears meshing therewith.

6. A pump or motor, having an annular passage of continuously varying width, a plurality of pistons movable along said passage, and means for rotating each piston about its own axis and in the opposite direction to that of its bodily movement along said annular passage, said means including a stationary gear and an annular train of successively intermeshing gears, each alternate gear being connected to a piston and each intermediate gear meshing with said stationary gear.

7. A pump or motor, having an annular row of pistons, an annular train of successively intermeshing gears, each alternate gear being connected to a separate piston, and a. stationary gear meshing with all of the remaining gears of said annular train.

8. In combination, a rotor having a plurality of members mounted therein for rotation about their individual axes and bodily movement about the axis of the rotor, and

means for effecting said rotation and bodily movement, including an annular and continuous train of gears, each alternate gear being connected to a corresponding one of said members, and a stationary gear with which the remaining gears mesh and along which they move.

Signed at Dallas, in the county of Dallas, and State of Texas, this 19th day of August, A. D. 1919.

FRANK REAUGH. 

